# SIGTERM, SIGSEGV, SIGINT, SIGILL, SIGABRT, SIGFPE

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Defined in header `<csignal>` |  |
#define SIGTERM /*implementation defined*/ |  |
#define SIGSEGV /*implementation defined*/ |  |
#define SIGINT /*implementation defined*/ |  |
#define SIGILL /*implementation defined*/ |  |
#define SIGABRT /*implementation defined*/ |  |
#define SIGFPE /*implementation defined*/ |  |

Each of the above macro constants expands to an integer constant expression with distinct values, which represent different signals sent to the program.

Constant | Explanation
`SIGTERM` | termination request, sent to the program
`SIGSEGV` | invalid memory access (segmentation fault)
`SIGINT` | external interrupt, usually initiated by the user
`SIGILL` | invalid program image, such as invalid instruction
`SIGABRT` | abnormal termination condition, as is e.g. initiated by std::abort()
`SIGFPE` | erroneous arithmetic operation such as divide by zero

### Notes

Additional signal names are specified by POSIX.

### See also

signal | sets a signal handler for particular signal (function)
raise | runs the signal handler for particular signal (function)
C documentation for signal types

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